EP0273117B1 - Procédé et machine pour la fabrication des brosses - Google Patents

Procédé et machine pour la fabrication des brosses Download PDF

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Publication number
EP0273117B1
EP0273117B1 EP87114632A EP87114632A EP0273117B1 EP 0273117 B1 EP0273117 B1 EP 0273117B1 EP 87114632 A EP87114632 A EP 87114632A EP 87114632 A EP87114632 A EP 87114632A EP 0273117 B1 EP0273117 B1 EP 0273117B1
Authority
EP
European Patent Office
Prior art keywords
brush body
heating
bristles
apertures
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87114632A
Other languages
German (de)
English (en)
Other versions
EP0273117A1 (fr
Inventor
Heinz Dr. Zahoransky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anton Zahoransky GmbH and Co
Original Assignee
Anton Zahoransky GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anton Zahoransky GmbH and Co filed Critical Anton Zahoransky GmbH and Co
Publication of EP0273117A1 publication Critical patent/EP0273117A1/fr
Application granted granted Critical
Publication of EP0273117B1 publication Critical patent/EP0273117B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/04—Machines for inserting or fixing bristles in bodies
    • A46D3/045—Machines for inserting or fixing bristles in bodies for fixing bristles by fusing or gluing to a body
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/04—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by mouldable materials, e.g. metals, cellulose derivatives, plastics

Definitions

  • the machine relates to a method for connecting bristle bundles to a brush body or the like, wherein at least one receiving hole for a bristle bundle is provided in the brush body and the connection is carried out under the influence of heat.
  • the disadvantage here is that the plastic material of the bristle carrier must be heated so that it becomes dough a few millimeters deep. This takes a lot of time, since it is only possible to work up to certain heating temperatures in order to prevent the material from igniting. There is also the danger that the brush body will warp due to the one-sided, strong application of heat and the bristle field will thereby become uneven.
  • the object of the present invention is to provide a method for connecting bristle bundles to a brush body or the like of the type mentioned at the outset, in which the aforementioned disadvantages are at least largely avoided.
  • the bristle bundles should be securely anchored to the brush bodies even with a fast cycle.
  • the production result should at least be comparable to previous brushes or the like, in particular with regard to the uniformity of the bristle field, the surface quality, the holding force and the like.
  • the invention proposes in particular that the brush body or the like. Is deformably heated in the region of the hole cavity (s) and that the associated bristle bundle is then pressed into the hole (s) with its anchoring end (s) in such a way that the deformable brush body material within the holes is at least partially displaced into spaces between bristles of the bundle.
  • the bristle bundle can usually be plugged into the existing brush body receiving hole, whereby on the one hand the bristle ends can penetrate into the base of the hole plasticized by the heating and are anchored there, and an additional connection between the bristles is formed within the hole by the displaced plastic material and also with the perforated jacket, so that overall a high bundle holding force can be achieved.
  • the heating takes place specifically in very limited areas, so that the total heat input can be kept small. The risk of warping the brush body is practically avoided.
  • the brush body material is expediently heated in the perforated areas to approximately the flowable consistency.
  • the material can also get particularly well into narrow spaces between the individual bristles and also between the ends of the bristle bundle and the perforated wall, so that this also favors a particularly stable connection.
  • the bristle bundles are inserted so deeply into the brush body holes that the flowable or similar deformable material rises to the surface of the brush body, preferably to slightly below the surface of the brush body.
  • the brush body hole is thus sealed at its upper end, so that on the one hand there is a connection to the bundle of bristles over the entire depth of the hole and on the other hand there is also a considerable advantage in terms of hygiene, because this also counteracts the colonization of harmful bacteria.
  • an undesirable bead is formed around the hole entry opening.
  • the hole cavities are at least predominantly heated in the area of their hole base.
  • the hole side walls remain largely dimensionally stable even in the heating phase, so that they can form a stable side guide for the bristle bundles. A divergence of the bundle insertion ends during the tamping process is thus counteracted.
  • both the hole cavities of the brush body and the anchoring ends of the bristle bundle are heated before connecting, in particular the heating being carried out so that the Ver anchor ends after heating have a firmer consistency than the material in the area of the hole cavities.
  • the anchoring end of the bristle bundle can penetrate the deformable material, in particular in the region of the base of the hole, and displace part of the material upwards.
  • heating the anchoring ends to a deformable but not yet flowable state has the advantage that the individual bristles in the anchoring area can press even closer together when pressed into the hole cavities, which also results in an even more stable anchoring.
  • the invention also relates to a brush production machine for brushes, the bristle bundles of which are connected to the brush body under the influence of heat, the machine having at least one tamping station and preferably further processing stations, in particular for reworking the tamped brushes.
  • this brush production machine is characterized in particular in that at least one heating station is provided in front of the tamping station for heating at least the perforated areas of the brush body.
  • the bristle bundles can be stuffed in the usual way at the tamping station, the anchoring within the hole area by the penetration of the anchoring ends of the bristle bundles into the material made deformable or flowable within the brush body hole by heating he follows.
  • heating stations are arranged one behind the other, preferably with increasing temperature levels. Since the production of brushes is usually carried out in cycles with predetermined cycle times, but on the other hand a longer time may be required for targeted, local heating, this training with several heating stations can be successively carried out in stages at the desired cycle times in the predetermined cycle times .
  • the heating station has a laser device for generating a laser beam and that a positioning device or the like for positioning the brush body hole to be heated in each case. is provided relative to the laser beam.
  • a positioning device or the like for positioning the brush body hole to be heated in each case. is provided relative to the laser beam.
  • the heating station (s) have one or more heating pins which engage in the brush body holes, preferably in a non-contact manner, in particular electrically supplied and thermostatically controlled.
  • the heating pin can thus be kept at a constant temperature level during operation, so that a constant work result is also achieved thereby.
  • the heating pin expediently has a smaller distance from the hole base or the hole base area than from the rest of the hole wall. As a result, the area of the base of the hole is at least predominantly heated in a desired manner and the material located there is plasticized or liquefied.
  • the invention also relates to a product, preferably a brush, which is produced in particular by the method according to the invention, the brush having a brush body with holes for inserting bristle bundles and the connection between the brush body and bristle bundle taking place under the influence of heat.
  • This brush body is particularly characterized in that brush body material originating from the area of the base of the hole or holes as a connecting material between the brush body and tufts of bristles reaches into the outer region of the corresponding hole, possibly up to close to its outer edge, and in this area a connection is made produces numerous bristles of the associated bristle bundle.
  • the bristles can be fastened in the brush body with the usual stuffing tool, since the outer wall area remains sufficiently stable for plugging in the bristle bundle.
  • bristle bundles 2 are connected to the brush body 3 or a brush body under the influence of heat.
  • the brush body 3 which is made of plastic, has holes 4 molded in the usual way, for example during a spraying process for its production.
  • the hole cavity is first preferably heated predominantly in the area of its hole base 6 until the material located there is deformable, in particular flowable.
  • the bundle of bristles 2 is then plugged in, the anchoring ends 7 penetrating beyond the original hole base 6 into the brush body material.
  • the plug depth of the bristle bundle 2 is dimensioned such that the material displaced when the anchoring ends 7 penetrate into the brush body material into the Gaps between bristles 8 and also in the space between bristle bundle 2 and perforated wall 9 and thereby rises within the hole 4 to preferably slightly below the brush body surface 10. Due to the local heating in the area of predominantly the hole base or the areas of the hole cavity close to the hole base, the remaining, further outward area of the hole or holes 4 remains stable, so that when the bristle bundle 2 is plugged in, a. good guidance and also a comprehensive holder of the bristle bundle is available.
  • a secure connection between the bristle bundle and the brush body is achieved via the depth of the hole and, in addition, by the extent to which the ends of the bristle bundle penetrate into the base 6 of the hole.
  • the anchoring ends 7 of the bristle bundles 2 can also be heated before plugging, but this heating is only carried out to the extent that the intrinsic stability of the bristles is still retained.
  • plugging can still be carried out in the usual way using the stuffing tool 5 and, in addition, the additional heating of the bristle bundles 2 promotes an even better connection or anchoring within the hole 4 with the brush body material.
  • the holes 4 shown in FIGS. 1 to 3 are cylindrical and have a straight hole base 6. In FIGS. 4 to 7, design variants with regard to the hole shape are shown.
  • the region near the base of the hole tapers conically towards the base of the hole 6.
  • This cone section 11 inter alia achieved that the anchoring ends 7 of the bristle bundle 2 are also slightly pressed into the hole side wall in the region of the cone section 11 when inserted into the brush body holes.
  • this shape can be advantageous when heated with the aid of a heating pin 12 shown in FIG. 7.
  • This heating pin 12 has at its end a spherical thickening 13, through which it is achieved that the distance between the surface of the heating pin 12 with thickening 13 from the surrounding perforated wall 9 is smaller in the heating area near the hole base than in the hole area, where none or only a little warming should take place.
  • Fig. 3 shows a dashed line, a heating pin 12 which is frustoconical at its inner end, the larger cross-section facing the hole base 6 and thereby also results in targeted heating around the hole base area.
  • the area in each case is indicated by points which becomes essentially deformable when heated and where the ends of the bristle bundles can penetrate.
  • the holes 4 shown in FIGS. 5 and 6 already have, starting from the brush body surface 10, a continuously conical (FIG. 5) or in one section tapered (FIG. 6) region 11 a or 11 b.
  • the heating pin 12 can be cylindrical, since even the hole shape results in the smaller distance between the hole wall 9 and the heating pin surface in the area near the hole base. With these hole shapes, too, there is practically no or only so little heating in the area of the hole edge that the material stability is maintained in this area, so that here a good guiding function for the bristle bundle is maintained when plugging.
  • Brushing is usually done at high cycle speeds. Since the heating in the hole area takes a certain amount of time, it can be advantageous if, in a heating station, a plurality of heating pins 12 with different temperature levels successively engage in the hole 4 to be stuffed.
  • the respective intervention time can correspond to the respective cycle time. Furthermore, there is the possibility that all holes 4 belonging to a hole field are preheated together by a corresponding number of engaging heating pins 12 to a certain temperature and that a heating rod with an elevated temperature level for plasticizing or liquefying the then immediately before plugging the respective hole provided hole area engages.
  • a laser device is provided for generating a laser beam, with which the corresponding one is then provided Hole area can also be heated up in the shortest possible time until it liquefies.
  • a laser beam for heating, relative positioning between the laser device and the brush body can take place, comparable to the stuffing station.
  • the next hole in each case is expediently heated using the laser beam immediately before the tamping process. In this case, very short cycle times can also be used.
  • a gas supply can also be provided at the heating station, by means of which, for. B. nitrogen can be supplied during the heating phase.
  • the heating pin 12 approximately comparable to an electric soldering iron, can have a preferably thermostatically controlled heating cartridge 14.
  • the double arrow Pf 1 indicates that the heating pin 12 is slidably arranged in this direction so that it can be pulled out of the hole 4 in the positioning phase of the brush body 3 and then inserted into the next hole.
  • brushes for a wide variety of uses and also brushes with a wide variety of brush field and brush body shapes can be produced according to the inventive method and the associated manufacturing machine.
  • a preferred field of application of the method according to the invention and the associated production machine is, however, the production of toothbrushes or the like.
  • Brushes serving for hygienic purposes, in which cleanliness of the bristle field and its immediate base of the brush body is important. Even after the bristle bundles have been inserted, the surface of the brush body 10, which is smooth and not fissured, at least in the area of the bristle area, not only has a more aesthetic, cleaner appearance for the consumer, but such a brush can also be used in this area due to a lack of fissures, a rough, irregular surface, etc. better kept clean and sterile.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)

Claims (20)

1. Procédé d'assemblage de faisceaux de poils comportant un corps de brosse ou similaire, une perforation au moins étant prévue dans le corps de brosse pour servir de logement à un faisceau de poils, et l'assemblage se faisant par effet thermique, caractérisé en ce que le corps de brosse (3) ou similaire est chauffé, de manière qu'il se déforme, dans la région de la (des) cavité(s) de perforation, et en ce qu'on presse ensuite, le faisceau de poils (2) correspondant, par son (ses) extrémité(s) d'ancrage (7) dans la (les) perforation(s), de manière que le matériau déformable du corps de brosse soit chassé à l'intérieur des perforations, au moins par endroits, dans les espaces compris entre les poils (8) du faisceau (2).
2. Procédé selon la revendication 1, caractérisé en ce que le matériau du corps de brosse est chauffé, dans les régions des perforations, jusqu'à ce que sa consistance soit coulante.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le faisceau de poils (2) est introduit dans les perforations (4) du corps de brosse, suffisamment profondément pour que le matériau coulant ou déformable remonte jusqu'à la surface (10) du corps de brosse, de préférence jusqu'à une courte distance au-dessous de cette surface.
4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les cavités des perforations sont chauffées, au moins principalement, dans la région de leur fond (6).
5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les cavités des perforations du corps de brosse ou similaire, ainsi que les extrémités d'ancrage (7) du faisceau de poils (2), sont chauffées avant l'assemblage, et en particulier en ce qu'on chauffe de manière que les extrémités d'ancrage présentent, après chauffage, une consistance plus solide que le matériau de la région des cavités des perforations.
6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les extrémités d'ancrage (7) du faisceau de poils (2) sont légèrement pressées dans la paroi latérale de perforation (9), se rétrécissant par exemple coniquement, lors de leur introduction dans les perforations (4) du corps de brosse.
7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'on place une plaque de couverture, présentant des perforations de même dimension, sur la face supérieure de la zone perforée (10) du corps de brosse (3), avant de fermer le corps de brosse (3) .
8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que, le cas échéant, en plus de l'apport de chaleur dans la région des perforations, on ajoute de la colle, avant ou pendant l'introduction du faisceau de poils (2), éventuellement en liaison avec une fixation usuelle par ancrage, pour les faisceaux.
9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'apport de chaleur dans la perforation (4) du corps de brosse, en particulier dans la région de son fond, s'effectue au moyen d'un rayon laser.
10. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce que, pendant que l'on chauffe la région perforée du corps de brosse, on envoie dans cette région chauffée un gaz empêchant qu'elle ne s'enflamme, de préférence de l'azote.
11. Machine de fabrication de brosses dont les faisceaux de poils sont assemblés au corps de brosse par effet thermique, la machine comportant au moins un poste de remplissage, ainsi que de préférence d'autres postes de traitement, en particulier pour la finition des brosses remplies, caractérisée en ce qu'on prévoit au moins un poste de chauffage, pour chauffer au moins les régions perforées du corps de brosse (3), en amont du poste de remplissage.
12. Machine selon la revendication 11, caractérisée en ce qu'on place plusieurs postes de chauffage, ou similaires, les uns derrière les autres, de préférence avec niveau de température croissant.
13. Machine selon la revendication 11 ou 12, caractérisée en ce que la (les) poste(s) de chauffage comporte(nt) une ou plusieurs broches chauffantes (12), en particulier chauffées électriquement et réglées par thermostat, pénétrant, de préférence sans contact, dans les perforations (4) du corps de brosse.
14. Machine selon la revendication 13, caractérisée en ce que la broche chauffante (12), en position de travail, se trouve à une distance du fond de la perforation (4).
15. Machine selon l'une quelconque des revendications 11 à 14, caractérisée en ce que la broche chauffante (12) présente, à son extrémité tournée à peu près vers le fond de la perforation, dans la position d'intervention, une section transversale supérieure à celle de la région adjacente, et de préférence à une extrémité, une tête, par exemple à peu près sphérique, avec un col de section transversale plus élancé.
16. Machine selon l'une quelconque des revendications 13 à 15, caractérisée en ce qu'on prévoit plusieurs broches chauffantes (12), éventuellement en nombre correspondant au nombre de perforations (4) du corps de brosse, disposées de manière à coïncider avec les perforations.
17. Machine selon l'une quelconque des revendications 11 à 16, caractérisée en ce qu'on prévoit un dispositif de chauffage, pour chauffer les extrémités des faisceaux à introduire.
18. Machine selon la revendication 11 ou 17, caractérisée en ce que le poste de chauffage comporte un dispositif à laser, pour produire un rayon laser, et en ce qu'on prévoit un dispositif de positionnement, pour positionner la perforation (4) du corps de brosse, ou similaire, à chauffer, par rapport au rayon laser.
19. Machine selon l'une quelconque des revendications 11 à 18, caractérisée en ce qu'on prévoit, au poste de chauffage, une arrivée de gaz menant à la région à chauffer du corps de brosse (3), destinée à l'alimentation de préférence en azote, ou gaz similaire.
20. Brosse comportant un corps de brosse présentant des perforations, pour l'introduction de faisceaux de poils, dans laquelle les faisceaux de poils et le corps de brosse sont assemblés par effet thermique, fabriquée en particulier selon un procédé suivant les revendications 1 à 10 et/ou au moyen d'une machine selon les revendications 11 à 19, caractérisée en ce que le matériau du corps de brosse, provenant de la région du fond de la ou des perforations (4), servant de matériau d'assemblage, parvient entre le corps de brosse (3) et les faisceaux de poils (2), jusque dans la région extérieure de la perforation (4) correspondante, éventuellement jusqu'à proximité de son bord extérieur, et réalise, dans cette région, un assemblage des nombreux poils (8) du faisceau de poils (2) correspondant.
EP87114632A 1986-11-05 1987-10-07 Procédé et machine pour la fabrication des brosses Expired - Lifetime EP0273117B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863637750 DE3637750A1 (de) 1986-11-05 1986-11-05 Verfahren zum verbinden von borstenbuendeln mit einem buerstenkoerper od. dgl., damit hergestellter buerstenkoerper sowie buerstenherstellungsmaschine dafuer
DE3637750 1986-11-05

Publications (2)

Publication Number Publication Date
EP0273117A1 EP0273117A1 (fr) 1988-07-06
EP0273117B1 true EP0273117B1 (fr) 1990-08-29

Family

ID=6313263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87114632A Expired - Lifetime EP0273117B1 (fr) 1986-11-05 1987-10-07 Procédé et machine pour la fabrication des brosses

Country Status (2)

Country Link
EP (1) EP0273117B1 (fr)
DE (2) DE3637750A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10646030B2 (en) 2015-07-13 2020-05-12 Gb Boucherie Nv Method and device for producing a brush

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823203A1 (de) * 1988-07-08 1990-01-11 Sanadent Ag Verfahren zum anbringen mindestens eines flexiblen, laengsausgedehnten elementes, anordnung mit einem solchen element und buerste
DE3828571A1 (de) * 1988-08-23 1990-03-01 Schlerf Coronet Werke Verfahren zur herstellung von borstenwaren
US5221123A (en) * 1991-04-24 1993-06-22 Klinkhammer Ronald W Bristles clusters, brushes, and their manufacture
DE19606416A1 (de) * 1996-02-21 1997-08-28 Coronet Werke Gmbh Verfahren zur Herstellung von Borstenwaren
PL185831B1 (pl) * 1996-02-21 2003-08-29 Coronet Werke Gmbh Sposób wytwarzania wyrobów ze szczeciny, zwłaszczaSposób wytwarzania wyrobów ze szczeciny, zwłaszcza szczotek szczotek
US5927819A (en) * 1997-02-28 1999-07-27 Gillette Canada Inc. Method and device for trimming and end-rounding bristles
DE19853030A1 (de) 1998-11-18 2000-05-25 Coronet Werke Gmbh Verfahren zur Herstellung von Borstenwaren und Vorrichtung zur Durchführung des Verfahrens
DE102008016637A1 (de) * 2008-04-01 2009-10-08 Firma G.B. Boucherie N.V. Bürste, insbesondere für Haushalt oder industrielle Anwendungen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2849510A1 (de) * 1978-11-15 1980-06-04 Zahoransky Anton Fa Buerstenherstellungsmaschine sowie verfahren zum herstellen von buersten
DE3511528C1 (de) * 1985-03-29 1991-01-03 Coronet - Werke Heinrich Schlerf Gmbh, 6948 Wald-Michelbach Verfahren zur Herstellung von Borstenwaren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10646030B2 (en) 2015-07-13 2020-05-12 Gb Boucherie Nv Method and device for producing a brush

Also Published As

Publication number Publication date
DE3637750A1 (de) 1988-05-11
EP0273117A1 (fr) 1988-07-06
DE3764624D1 (de) 1990-10-04

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